<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片试图区 -->
        <el-card>
          <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <!-- 搜索与添加区 -->
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <!-- 添加用户区 -->
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>

            <!-- 列表展示区域 -->
            <el-table :data="userList" border stripe >
              <el-table-column type="index"></el-table-column>
              <el-table-column label="姓名" prop="username"></el-table-column>
              <el-table-column label="邮箱" prop="email"></el-table-column>
              <el-table-column label="电话" prop="mobile"></el-table-column>
              <el-table-column label="角色" prop="role_name"></el-table-column>
              <el-table-column label="状态" prop="mg_state">
                <template slot-scope="scope">
                  <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)">
                  </el-switch>
                </template>
              </el-table-column>
              <el-table-column label="操作" width="180px">
                <template slot-scope="scope">
                  <!-- 修改按钮 -->
                  <el-tooltip effect="dark" content="编辑" placement="top" :enterable="false">
                    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                  </el-tooltip>
                  <!-- 删除按钮 -->
                  <el-tooltip effect="dark" content="删除" placement="top">
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                  </el-tooltip>
                  <!-- 分配角色按钮 -->
                  <el-tooltip effect="dark" content="角色分配" placement="top">
                    <el-button type="primary" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                  </el-tooltip>
                </template>
              </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination
              @size-change="handleSizeChange"
              @current-change="handleCurrentChange"
              :current-page="queryInfo.pagenum"
              :page-sizes="[1, 2, 3, 4, 5]"
              :page-size="queryInfo.pagesize"
              layout="total, sizes, prev, pager, next, jumper"
              :total="total">
            </el-pagination>
        </el-card>

        <!-- 添加用户的对话框 -->
        <el-dialog
          title="添加用户"
          :visible.sync="addDialogVisible"
          width="50%"
          @close="addDialogClosed">
          <!-- 内容主体区域 -->
          <el-form :model="addForm" :rules="addFormrules" ref="addFormRef" label-width="70px">
            <el-form-item label="用户名" prop="username">
              <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
              <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
              <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
              <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
          </el-form>
          <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
          </span>
        </el-dialog>

        <!-- 修改用户的对话框 -->
        <el-dialog
          title="修改用户"
          :visible.sync="editDialogVisible"
          width="50%" @close="editDialogClosed">
          <el-form label-width="100px" :model="editForm" :rules="editFormRules" ref="editFormRef">
            <el-form-item label="用户名">
              <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
              <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机号" prop="mobile">
              <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
          </el-form>
          <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
          </span>
        </el-dialog>

        <!-- 分配角色的对话框 -->
      <el-dialog title="提示" :visible.sync="setRoleDialogVisible" width="30%" @close="selectClosed">
        <div>
          <p>当前的用户： {{ userInfo.username }}</p>
          <p>当前的角色： {{ userInfo.role_name }}</p>
          <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="savaRoleInfo">确 定</el-button>
        </span>
      </el-dialog>
    </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, callback) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-0_-])+/
      if (regEmail.test(value)) {
        // 合法的邮箱
        return callback()
      }
      callback(new Error('请输入合法的邮箱'))
    }
    // 验证手机号的规则
    var checkMobile = (rule, value, callback) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法的手机号码'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 用户对话框的显示与隐藏
      addDialogVisible: false,
      // 修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加用户的校验规则
      addFormrules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 12, message: '长度在 6 到 12 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '电话号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 编辑用户的校验规则
      editFormRules: {
        email: [
          { required: true, message: '邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '电话号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      setRoleDialogVisible: false,
      // 需要被分配权限的角色用户
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      selectedRoleId: {}
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    // 获取用户列表
    async getUserList() {
      const { data: ref } = await this.$http.get('users', { params: this.queryInfo })
      if (ref.meta.status !== 200) return this.$message.error('error')
      this.userList = ref.data.users
      this.total = ref.data.total
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 用户状态改变
    async userStateChange(userinfo) {
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加用户
    addUser() {
      // 预校验
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('添加用户失败')
        this.$message.success('添加用户成功')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this.getUserList()
      })
    },
    // 修改用户
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('查询失败')
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo() {
      // 预验证
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 预验证通过，发起用户请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          })
        if (res.meta.status !== 200) return this.$message.error('更新失败')
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据列表
        this.getUserList()
        // 提示修改成功
        this.$message.success('更新成功')
      })
    },
    // 根据id删除对应的用户信息
    async removeUserById(id) {
      // 弹框询问是否删除数据
      const ref = await this.$confirm('此操作将永久删除该用用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (ref !== 'confirm') {
        return this.$message.info('已取消选择')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除用户失败')
      this.$message.success('删除用户成功')
      this.getUserList()
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 获取所有的角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取失败')
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮分配角色
    async savaRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择需要分配的角色')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) return this.$message.error('更新角色失败')
      this.$message.success('更新数据成功')
      this.getUserList()
      this.setRoleDialogVisible = true
    },
    // 关闭角色对话框
    selectClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>

</style>
